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exit status 1'SensorPin' was not declared in this scope//How to fix the error while compiling//part4 - YouTube
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error: 'wifi_station_get_reconnect_policy' was not declared in this scope - Programming Questions - Arduino Forum
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BUG] (mks Robin compiling error cs_pin not declared) · Issue #15439 · MarlinFirmware/Marlin · GitHub
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ubuntu 18.04 -->> error: 'floor' was not declared in this scope / error: 'sqrt' was not declared in this scope · Issue #3 · CogChameleon/ChromaTag · GitHub
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